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No. 84,470. 'PATENTED DEC. 1, 1868.

R. P. BARNETT, G. P. PURINTON & N. SEIBERT. 'ANTIFRIGTION BEARING FORVERTICAL SHAFTS.

RUFUS P. BARNETT, CHARLES 1P.

PURINTON, AND NICHOLAS SEI- BERT, 0F NEVADA, CALIFORNIA.

Letters Patent No. 84,470, dated December 1', 1868.

MOVEMENT mJmn-rmcrron FOR VER'I'IQAI- BHQI'TS.

I W- a. Schedule referred to inthue' Letters Patent and making part ofth6"lamo- To all whom it may com-om Be it known that we, Runes P.BARNETT, CHARLES P. Ponm'ros, and Nrcnomis Summer, of Nevada, county ofNevada, State of California, have invented an Improved Anti-FrictionBearing for Shafts; and we do .hereby declare the following descriptionand accompanying drawings are suflicient to enable any person skilled inthe art or science to which it most nearly appertains, to make and useour said invention or improvements without further invention orexperiment.

The object of our'invention is to provide an improved bearing forvertical shafts, and'such as ordinarily turn in a step, and which, fromtheir great weight, and the diflicultyin properly lubricating them, areliable to frequent disarrangementsi In order to rectify this evil, weform the endvof the shaft of sufficient. size, and allow it to rest uponthree or more hard metallic balls, these balls resting, in turn,- npon aselt adjusting plate or table, which is so constructed as to keep themall in contact with the shaft, even when the shaft gets out of line.

To keep the balls always in place, and retain their relative distancesfrom each other in their revolutions, a plate is formed, with openingsof suflicient size to allow the balls to turn freely. This plate turnsaround a central spindle in the adjusting-plate, moving with the balls.

To more fully explain our invention, reference is had to theaccompanying drawings, and the letters marked thereon, of which Figure 1is a side sectional elevation of our device.

.Figure 2 is a top view of the balls and the guiding plate.

Similar letters of reference indicate like parts in each of the figures.

A is a vertical shaft, having a base, B, which, if the shaitis small,may be enlarged, so as to give suflicient bearing-surface. In the lowerface, B, of this shaft may be placed a' steel plate, to reduce therolling friction, or the end of the shafl; may be made entirely ofsteel.

The base or step 0 is placed on a foundation, and within the opening isplaced a cylindrical block, I), which may be raised or lowered by meansof a setscrew, E so as to keep the shalt in 'place in case of I settlingor other change. The upper face of the block D 'has a concavityin it, asshown. I I

The plate on which the balls move may be made wholly, or have its upperface, F, of steel, as in the lower face of the shaft. Its lower surface,G, is made convex, so that thewhole plate may have aslight motion in anydirection, the convexity and concavity forming a univ'ersaljoint, bywhich means any change of line or other inequality is accommodated, andthe t'w'o faces, B and F, will thus be I always kept exactly parallel,so that the hearing will be equal on each of the balls, H H H, which areplaced at equaldistances from each other, as sho'wnin fig. 2. I

To keep them in place, a plate, I, is made, with openings of sufficientsize to just admit the largest part of the balls, and allow them to turnfreely. This plate has a central shaft or spindle, J ,which extends ashort distance into the plate on which the balls rest,

and thus guides the plate and the balls in their motion,- as well aspreserves the level of the plate the same at all times with regard tothe ba The shaft A may be of any necessary height and weight, and. havemachinery attached to it as desired. Any change, by settling orotherwise, may be easily rectified by the elevating-screw at the bottom,and by the self-operating universal joint.

Having thus described our invention,

What we claim, and desire to secure by Letters Patent, is-

1. In combination with the balls H, and their guide I, the universaljoint formed by the convex surface G, and the upper concave surface ofD, substantially as described. I

2. In combination with the balls 11 and the aboveclaimed joint, thescrew E, to adjust the same to the required elevationbeneath the shafla.

In witness whereof, we have hereunto set our hands and seals.

' RUFUS P. BARNETT. L. s. CHARLES P. PURINTON 1.. s. NICHOLAS BEIBERT.L. s.

Witnesses:

Join: ANDERSON, Lonmc W. Wmmms.

